Caster



A. B. DISS.

CASTER.

APPLICATION FILED MARC3I, 1919.

Patented Feb. 3, 1920.

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ITEI) STATES PATENT OFFICE.

ALBERT B. DISS, NEWARK, NEW JERSEY ASSIGNOR TO THE BASSICK COMPANY, OF BRIDGEPORT, CCNNECTICUT, A CORPORATION OF CONNECTICUT.

CASTER.

Application filed March 31, 1919.

To all whom it may concern:

Be it known that I, ALBERT B. Diss, a citizen of the United States, residing at the city of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Casters; and I do declare the following to be a full, clear, and exact description or the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain new and useful improvements in a top bearing caster and a very important object is to improve the formation of the pintle so that the same may be very economically constructed.

The invention further resides in the improved socket construction wherein the socket is stamped from sheet metal and shaped into tubular form with intermediate inward projections to engage and retain the pintle therein.

In the drawing Figure 1 is a vertical section through a. caster embodying the present invention, the pintle and its supporting caster wheel being left in elevation;

Fig. 2 is a horizontal section through the caster on line 2-2 of Fig. 1;

Fig. 3 is an elevation of the pintle-receiving socket; and

Fig. 4- is a plan of the blank from which the socket is formed.

The tubular furniture post or leg 1. fits within the annular flange 2 of the base memher 8 which is formed with a central opening and a surrounding swell or ridge 4 to serve as a glider when the pintle 5 is removed from its socket 6, said pintle rising from the horn 7 in which the caster wheel 8 is iournaled.

The socket 6 is struck up from a blank comprising side sections 9 arranged end to end and connected by an interposed disk 10 which constitutes the top of the socket when the sides 9 are turned down and given a transverse curvature to complete the tubular socket. The sides of the socket-forming b ank are slitted at U to afford resilient portions intermediate the ends of the socket. The disk-like top 10 is perforated at 12 through which a rivet 13 is upwardl passed for securing thereto the inverted U-spring frame 14.

This arrangement disposes the head of the Specification of Letters Patent.

Patented Feb. 3, 1920.

Serial No. 286,458.

rivet within the socket against its top wall 10 and thus provides a round bearing for the rounded upper end of the pintle to engage, and this makes a minimum friction contact so that the pintle can turn readily with any movements of the caster.

The lower end of the socket is disposed within the central opening of the base member and is swaged or crimped to provide spaced flanges or shoulders 15 between which the base member is securely clamped.

A very important feature of this invention is the formation of the pintle 5 without any head enlargement or lateral projection as is commonly found on the caster pintles heretofore used. In the present instance the pintle is formed of substantially uniform width throughout and intermediate its length is reduced by forming a peripheral groove 16. Within this groove engages a plurality of inward projections 17 struck from the intermediate resilient portion of the socket for retaining the pintle therein. The reduction in the diameter of the pintle, in lieu of an enlargement or lateral projection, materially cheapens the manufacture thereof and alsoprovides an efficient keeper for the projection 17 to cooperate with.

The socket is equipped with a rounded bearing to rest on the like shaped upper end of the pintle to thereby reduce the friction therebetween to a minimum. This rounded bearing of the socket also constitutes the connecting means between the socket and the spring frame which frictionally engages the inner wall of the hollow post or leg 1.

l/Vhat is claimed is- 1. A caster of the top bearing type, comprising a base member having a central opening, a socket secured therein at its lower end and having its top formed with a' centra'l aperture, an inverted U-spring frame seated on the top of the socket. a rivet pass ing throu h the aperture in the top of the socket and securing the frame thereto, the head of the rivet being located within the socket and constituting a rounded bearing for a pintle, and a pintle disposed within the socket and formed with a semi-spherical upper end in contact with the rivet head.

In a top bearing caster, a pintle having its upper end formed with a convex bearing surface. a socket for receiving the pintle. a spring frame for retaining the socket in position, and a rivet securing the frame to the socket and passed through the top of the latter, the bottom head of the rivet being formed into a spherical bearing 011 which the convex pintle hearing surface'engages.

In a caster, a pintle, a socket received over the pintle having its upper end formed to provide a bearing and having an upper end overlying the upper end of the pintle, a spring frarne formed independent of the socket and having a part overlying the said socket end, and a rivet securing said socket end and frame part together, the rivet havthe hearing at the upper end of the pintle. 15

In testimony whereof I affix my signature.

ALBERT B. DISS. Witnesses:

ROBERT F. RHODES, J OHN A. HARRIS. 

